From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 32415C433ED for ; Thu, 20 May 2021 15:04:19 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E37AE60FE8 for ; Thu, 20 May 2021 15:04:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E37AE60FE8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:52698 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ljkDh-0007E7-TD for qemu-devel@archiver.kernel.org; Thu, 20 May 2021 11:04:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40268) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljk6b-0003mV-Ev for qemu-devel@nongnu.org; Thu, 20 May 2021 10:56:57 -0400 Received: from forward1-smtp.messagingengine.com ([66.111.4.223]:33463) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljk6Z-0000Qy-9c for qemu-devel@nongnu.org; Thu, 20 May 2021 10:56:57 -0400 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailforward.nyi.internal (Postfix) with ESMTP id 1827A19409BD; Thu, 20 May 2021 10:56:51 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Thu, 20 May 2021 10:56:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :message-id:mime-version:subject:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm2; bh=1RuXScUYzcGIpx3b8 iFAVEDzYE0Pc6TLx+tOKwThO3g=; b=EakPvUnCYOg3KzbxK+3agXEvK8p6cKvpF E6KUYj7YyCERSqBtNAVZ8EHWPpK17aadwSrxa1XYlVGcjV283vl3O32ww79Q/cyM kw7XEay91Q7g33yITV3Gx6mOjBJYhuVm8uAFNIahwn9SrSONEKFsYw14LwryxGrB 1UskGMsXA+zxzeyMBUWwIWls4svjgzXhJTkd21Qk/a6JZuO/F+G/1O+YzaRysv8a yvUHhWftyI0TCcXIuD1H936au+paMMBzciJGGm+8yNowLVa2vvGJ+kDRjyYRobrT dwFOMEkgTqUAU+BayqHkW8OWZMpEPebulOrksph1uKidLdPCNSjuw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrvdejuddgkeefucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvufffkffoggfgsedtkeertdertddtnecuhfhrohhmpeffrghvihguucfg ughmohhnughsohhnuceouggrvhhiugdrvggumhhonhgushhonhesohhrrggtlhgvrdgtoh hmqeenucggtffrrghtthgvrhhnpeduhfetvdfhgfeltddtgeelheetveeufeegteevtddu iedvgeejhfdukeegteehheenucfkphepkedurddukeejrddviedrvdefkeenucevlhhush htvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpegurghvihgurdgvughm ohhnughsohhnsehorhgrtghlvgdrtghomh X-ME-Proxy: Received: from disaster-area.hh.sledj.net (disaster-area.hh.sledj.net [81.187.26.238]) by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 20 May 2021 10:56:49 -0400 (EDT) Received: from localhost (disaster-area.hh.sledj.net [local]) by disaster-area.hh.sledj.net (OpenSMTPD) with ESMTPA id 7d490b61; Thu, 20 May 2021 14:56:47 +0000 (UTC) From: David Edmondson To: qemu-devel@nongnu.org Subject: [RFC PATCH 0/7] Support protection keys in an AMD EPYC-Milan VM Date: Thu, 20 May 2021 15:56:40 +0100 Message-Id: <20210520145647.3483809-1-david.edmondson@oracle.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: softfail client-ip=66.111.4.223; envelope-from=david.edmondson@oracle.com; helo=forward1-smtp.messagingengine.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_SOFTFAIL=0.665, UNPARSEABLE_RELAY=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , kvm@vger.kernel.org, Marcelo Tosatti , Richard Henderson , David Edmondson , Babu Moger , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" AMD EPYC-Milan CPUs introduced support for protection keys, previously available only with Intel CPUs. AMD chose to place the XSAVE state component for the protection keys at a different offset in the XSAVE state area than that chosen by Intel. To accommodate this, modify QEMU to behave appropriately on AMD systems, allowing a VM to properly take advantage of the new feature. Further, avoid manipulating XSAVE state components that are not present on AMD systems. The code in patch 6 that changes the CPUID 0x0d leaf is mostly dumped somewhere that seemed to work - I'm not sure where it really belongs. David Edmondson (7): target/i386: Declare constants for XSAVE offsets target/i386: Use constants for XSAVE offsets target/i386: Clarify the padding requirements of X86XSaveArea target/i386: Prepare for per-vendor X86XSaveArea layout target/i386: Introduce AMD X86XSaveArea sub-union target/i386: Adjust AMD XSAVE PKRU area offset in CPUID leaf 0xd target/i386: Manipulate only AMD XSAVE state on AMD target/i386/cpu.c | 19 +++++---- target/i386/cpu.h | 80 ++++++++++++++++++++++++++++-------- target/i386/kvm/kvm.c | 57 +++++++++---------------- target/i386/tcg/fpu_helper.c | 20 ++++++--- target/i386/xsave_helper.c | 70 +++++++++++++++++++------------ 5 files changed, 152 insertions(+), 94 deletions(-) -- 2.30.2